Bill Gates attends the Clinton Global Initiative Annual Meeting at The Sheraton New York on September 24, 2013 in New York City. Shutterstock

President Donald Trump doesn’t know the difference between the virus that causes AIDS, HIV, and HPV, the virus that causes anal warts according to Bill Gates.

Gates took questions from staff at a recent Bill & Melinda Gates Foundation meeting and video from the Q&A has now been leaked. In it, Gates recalls two meeting with Trump where the president asked him if there was a difference between HIV and HPV.

“In both of those two meetings, he asked me if vaccines weren’t a bad thing because he was considering a commission to look into ill-effects of vaccines and somebody – I think it was Robert Kennedy Jr – was advising him that vaccines were causing bad things. And I said no, that’s a dead end, that would be a bad thing, don’t do that,” Gates says in the recording.

“Both times he wanted to know if there was a difference between HIV and HPV so I was able to explain that those are rarely confused with each other.”

Trump did remember what Gates’ young daughter looks like.

“So when I first talked to him it was actually kind of scary how much he knew about my daughter’s appearance. Melinda [Gates’s wife] didn’t like that too well,” he recalled.